I love Van Gogh and many of the classical artists. Especially Starry Night. I agree with your take on things. I think though that people wait until the painter is gone before they make their works famous. A living painter can always make more art, but there is only so much from a deceased painter. A finite number of paintings created by an artist have value, while a living artist can create more art and that drops the value of their other works. It's silly but that's the way it seems to me.